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  <title>Open persistent Informix connection</title>
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  <div id="layout-content"><div id="function.ifx-pconnect" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ifx_pconnect</h1>
  <p class="verinfo">(PHP 4, PHP 5 &lt; 5.2.1)</p><p class="refpurpose"><span class="refname">ifx_pconnect</span> &mdash; <span class="dc-title">Open persistent Informix connection</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.ifx-pconnect-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>ifx_pconnect</strong></span>
    ([ <span class="methodparam"><span class="type">string</span> <code class="parameter">$database</code></span>
   [, <span class="methodparam"><span class="type">string</span> <code class="parameter">$userid</code></span>
   [, <span class="methodparam"><span class="type">string</span> <code class="parameter">$password</code></span>
  ]]] ) : <span class="type">resource</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>ifx_pconnect()</strong></span> acts very much like
   <span class="function"><a href="ifx_connect.html" class="function">ifx_connect()</a></span> with two major differences.
  </p>
  <p class="para">
   First, when connecting, the function would first try to find a
   (persistent) link that&#039;s already open with the same host,
   username and password.  If one is found, an identifier for it
   will be returned instead of opening a new connection.
  </p>
  <p class="para">
   Second, the connection to the SQL server will not be closed when
   the execution of the script ends.  Instead, the link will remain
   open for future use (<span class="function"><a href="ifx_close.html" class="function">ifx_close()</a></span> will not
   close links established by <span class="function"><strong>ifx_pconnect()</strong></span>).
  </p>
  <p class="para">
   This type of links is therefore called &#039;persistent&#039;.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.ifx-pconnect-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   All of the arguments are optional, and if they&#039;re missing, defaults are
   taken from values supplied in <var class="filename">php.ini</var> (ifx.default_host for the host
   (Informix libraries will use <var class="envar">INFORMIXSERVER</var> environment
   value if not defined), ifx.default_user for user, ifx.default_password for
   the password (none if not defined).
  </p>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">database</code></dt>

     <dd>

      <p class="para">
       The database name, as a string.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">userid</code></dt>

     <dd>

      <p class="para">
       The username, as a string.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">password</code></dt>

     <dd>

      <p class="para">
       The password, as a string.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.ifx-pconnect-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns: valid Informix persistent link identifier on success, or <strong><code>FALSE</code></strong>
   on errors.
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.ifx-pconnect-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="ifx_connect.html" class="function" rel="rdfs-seeAlso">ifx_connect()</a> - Open Informix server connection</span></li>
   </ul>
  </p>
 </div>


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